Electrostatic Discharge Protection Device

A technology of electrostatic discharge protection and polar electricity, which is used in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc.

Active Publication Date: 2015-10-21
MACRONIX INT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another object of the present invention is to overcome the defects existing in the existing electrostatic discharge protection device and provide a novel structure electrostatic discharge protection device. The technical problem to be solved is to make it use the voltage control circuit to provide Control the current path from the control terminal of the rectifier to the second wiring to avoid uneven conduction, which is more suitable for practical use

Method used

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Embodiment Construction

[0060] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, characteristics and effects of the electrostatic discharge protection device proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , as detailed below.

[0061] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation, it should be possible to obtain a deeper and more specific understanding of the technical means and effects of the present invention to achieve the intended purpose, but the attached drawings are only for reference and description, not for the purpose of the present invention. be restrict...

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Abstract

The invention relates to an electrostatic discharge (ESD) protector which comprises an modified lateral silicon control rectifier (MLSCR) and a voltage control circuit, wherein the MLSCR comprises a first end, a second end, and a control end connected with a first P+ doped region; the first end and the second end are electrically connected with a first wire harness and a second wire harness respectively; and the voltage control circuit is electrically connected with the first wire harness, the second wire harness and the control end. When an ESD pulse appears in the first wire harness, the voltage control circuit supplies a current path from the first wire harness to the control path; and when input signals are input to the first wire harness, the voltage control circuit receives a supply voltage, and stops supplying the current path according to the supply voltage.

Description

technical field [0001] The invention relates to an electrostatic discharge protection device, in particular to an electrostatic discharge protection device with a modified lateral silicon-controlled rectifier. Background technique [0002] Electrostatic discharge (ESD) is often the main cause of electrostatic overstress or permanent damage to integrated circuits. Therefore, electrostatic discharge protection devices are added to integrated circuits to prevent electrostatic discharge. damage. In recent years, a modified lateral silicon-controlled rectifier (MLSCR for short) has become a basic element in the design of an electrostatic discharge protection device. However, the modified lateral silicon controlled rectifier also has several disadvantages in operation that must be overcome. [0003] For example, the trigger voltage and holding voltage of the modified lateral SCR are often too high and too low. In addition, the modified lateral silicon controlled rectifier is pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02H02H9/04
Inventor 何介暐
Owner MACRONIX INT CO LTD
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